1921
The US throw the European immigration after the year 1910. There were to many immigrants in the US.
1923
Over 2 million people come into the USA each year legally on either immigration or work visas.
There was no single year. The Nazi persecution of the Jews led to increased immigration to the then Mandate of Palestine from 1933 onwards.
In 1921, Congress enacted a law limiting annual immigration to the US to 350,000 people per year. Each year, European nations could send to the US a number equal to 3 percent of its nationals who were in the US in the year 1910. In 1924, Congress amended the immigration law and reduced the number of immigrants to 150,000, and the quota to 2 percent, and the base year to 1890. This law favored immigration from nations like Great Britain, but discriminated against central and eastern European nations like Poland, Russia and Syria. This became known as the Quota System.
In 1921, Congress enacted a law limiting annual immigration to the US to 350,000 people per year. Each year, European nations could send to the US a number equal to 3 percent of its nationals who were in the US in the year 1910. In 1924, Congress amended the immigration law and reduced the number of immigrants to 150,000, and the quota to 2 percent, and the base year to 1890. This law favored immigration from nations like Great Britain, but discriminated against central and eastern European nations like Poland, Russia and Syria.
During the 1920s, multiple laws were passed that did restrict immigration to the United States. Probably the most important of these laws was the Immigration Act of 1924 (Johnson-Reed Act). This act gave an immigration quota to each country. This quota was based on 2% of immigrants living in the US from any one country at the 1890 census. For instance, if there were 1 million immigrants from one country living in the United States in 1890, then after the Immigration Act, only 20,000 people from that country could come per year. This was down from the 3% that the Emergency Quota Act of 1921 set up. The Immigration Act was set up primarily to cap the growing number of Southern and Eastern European immigrants, as well as Asian immigrants. Contrary to what some may believe, Asians were never completely restricted from immigrating to the US, just from naturalized citizenship. (Information from Wikipedia)
To this day there has always been immigration to the US
The biggest year for the United States when it comes to immigration is 2010 and 2013.
The peak year of immigration was 1934.
1852
IT HASN'T!